code: def rnd_bar_count(max_bars=21):
      # now = pd.Timestamp.utcnow()
      return randint(0, max_bars)
  
file_path: catalyst/tests/exchange/test_utils.py
imports: import os
  import tempfile
  from datetime import timedelta
  from random import randint
  import pandas
  from catalyst.assets._assets import TradingPair
  from catalyst.utils.paths import ensure_directory
label_desc: Use image node_id 3 for calling a global function with example usage: rnd_bar_count(max_bars) and returns: randint